Which of the following element is more reactive than copper?

Zinc

The correct answer is option 2. Zinc.

The reactivity of metals is often determined by their position in the reactivity series. In the context of the options provided: Zinc \((Zn)\) is more reactive than copper \((Cu)\).

The reactivity series is a list of metals arranged in decreasing order of their reactivity. Metals higher in the reactivity series can displace those lower in the series from their compounds in chemical reactions.

For example, zinc can displace copper from its compounds in reactions. This can be illustrated by the reaction between zinc and copper sulfate:

\[ \text{Zn(s) + CuSO}_4(aq) \rightarrow \text{ZnSO}_4(aq) + \text{Cu(s)} \]

In this reaction, zinc \((Zn)\) displaces copper \((Cu)\) from copper sulfate \((CuSO_4)\), indicating that zinc is more reactive than copper. Gold, silver, and platinum are less reactive than copper and are not capable of displacing copper from its compounds under normal conditions.